Biomass can be regarded as a promising alternative energy source for petroleum. The key to convert biomass into important energy materials and basic platform compounds is to convert cellulose, an important component of biomass, into glucose by directional hydrolysis.

The new preparation process of tungsten carbide-titanium carbide solid solution tungsten carbide-titanium carbide solid solution is a kind of compound carbide with high melting point, high hardness, high wear resistance, excellent anti-adhesion, oxidation resistance and wear resistance. It is widely used in cemented carbide products for mechanical processing. It is found that when carbide mixtures are added, it is difficult to control the carbon content because of the solid solution reaction during the sintering process. Therefore, carbide solid solution is usually added to cemented carbides in the production of cemented carbides.

Tungstate red phosphor white LED is a new type of solid-state lighting electric light source (SSL). Its principle and structure are different from those of previous vacuum electric light sources such as incandescent lamp and fluorescent lamp. SSL light source has many advantages, especially high light efficiency, energy saving, long life and pollution-free. It has great application value and prospects.

SCR catalyst belongs to hazardous solid waste, which will seriously pollute the environment. Meanwhile, various valuable metals contained in the failed catalyst have not been recycled, resulting in a huge waste of resources. Therefore, the recycling of failed catalysts can not only solve the corresponding risk of environmental pollution, but also turn waste into treasure and make full use of resources.